Charge-forming device for internal-combustion engines.



H. MANTHEY. CHARGE FORMING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. 17, I917.

Patented D00. 10, 1918.

Z SHEETSSHEETI H. MANTI-IEY. CHARGE FORMING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR. I7, 19H.

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HENRY MANTHEY, OF LANSING, MICHIGAN, ASSIGNOR TO THE NEW-WAY MOTOR COMPANY, OF LANSING, MICHIGAN.

CIIARGE-FORMING DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent- Patented D60. 10, 1918- Original application filed June 10, 1916, Serial No. 102,915. Divided and this application filed April 17, 1917. Serial No. 162,648. a

T 0 all whom it may concern: I

Be it known that I, HENRY MANTHEY, a citizen of the United States, residing at Lausing, in the county of Ingham and State of Michigan, have nivented certain new-and useful Improvements in Charge Forming Devices for Internal-Combustion Engines, of which the following is a specification.

This invention relates to improvements in charge forming devices for internal combustion engines. a

The main objects of this invention are:

First, to provide an improved charge forming device for internal combustion eng'ines of very high etlieiency.

Second, to provide an improved charge forming device for internal combustion engines which is adapted tothe use of the heavier hydrocarbons such as kerosene and distillates.

Third, to provide an improved carburetor adapted for the use of such fuels in which a portion of the exhaust gases are used to heat and dilute the explosive-charges for the engine.

Fourth, to provide an improved charge forming device for internal combustion engines which is simple and compact in structure and not likely to get out of repair in use.

Further objects and objects 'relatingito structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The ini'eiition is cl arly defined and pointed out in the claims. A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming a part of this specification, in which:

Figure I is a side view of my improved charge forming device partially in section through the fuel reservoir illustrating the means for controlling the fueltherein:

Fig. 11 is a detail vertical central section on a line corresponding to line 22 of Figs. III and IV, parts being shown in full lines for convenience in illustration.

Fig. III is a plan view of my improved carburetor.

Fig. IV is a detail horizontal suction on a line corresponding to line HEY Fig. I.

Fig. V is a detail vertical section on a line corresponding to line 55 of Fig. III showmg details of the closure cap.

1n the drawing, similar reference characters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

This application is a continuation and division in part of my co pending application, Serial No. 102,915, filed June 10, 1916. Referring to the drawing, the. body 1 of my improved carbureter is provided with a 'carbureting chamber 2, through which the exhaust pipe member 3 extends vertically.

The carbureting chamber is provided with a discharge 4 at one side connected to the manifold or engine conduit 6. The carblrreter is controlled by the throttle '7 which, in

practice, I preferably connect with a governor. The governor mechanism and connec-.

'tions are notshown as they form no part of my present invention.

The inlet passage 8 is arranged to deliver through the venturi restriction 9 against the side of the exhaust pipe member opposite the.

discharge 4. The inlet passage is provided with a' slot-like mouth 10 disposed close to the section 11 of the exhaust pipe member so that the air passing thereto is more or less heated by coming in contact with or by primary air and the fuel as it is discharged against the heating member. This auxiliary air inlet is controlled by a suction actuated valve 14 normally retained on its seat by the spring 15. The tension of this spring is adjustedby the nut 16 so that it may be adjusted to open under the desired suction.

The fuel nozzle 17 is disposed to deliver at the venturi 9 so that the fuel is discharged against the side of the heating member. This nozzle is controlled by the valve 18 threaded for adjustment into the nozzle. A fuel passage 19 connects the nozzle to the i reservoir 20.

The means for maintaining the constant level of fuel in the reservoir 20 are described and claimed in my co-pending application referred to above and will not therefore be described in detail here. .l/Vhile I preferably employ the-means for maintaining a constant level in the reservoir 20 therein described othermeans maybe employed' I have discovered thatoverheating and the premature ignition and combustion of the explosive charge and consequent hammering frequently accompanying the operationof motors of this type, in which the heavier hydrocarbons are employed as'a fuel, can be overcome or eliminated by introducfling a portion of the exhaust gases into the explosive charge! one end of which is in communication with the exhaust 3'. through the union ,41, and the other end of which is placed in communication with the discharge passage 4 through the union 42. By this means a portion of primary the hot exhaust gases is introduced into the charge and mixed therewith and then introduced into the explosion chamber. The effect ofthe introduction of these exhaust gases into the charge and their mixture therewith is not thoroughly understood but the result offthis introduction is ap-' parently to delay the combustion of the charge and ing and lso-the overheating ofengines employing the heavier hydrocarbons: I

The cap 12 serves somewhat to restrict the discharge of the gases, so thatthe portion of the exhaust gases introduced to the car bureter is introduced under force by the exhaust delivery from the engine. This delivery of the exhaust gases by force is a feature of decided advantage in that it in-' sures a further agitation and mixing of the carbureted. mixture.

tion is preferably disposed at the rear of.

The exhaust connec-' the venturi or mixing point for the primary air and fuel and preferably delivers as shown in Fig. IV against the side of the exhaust member,where it passes through the carbureting chamber.

Having thus described myinvention, what I claim as new and desire to secure by Letters Patent is:

'1. In a structure of the class described, the combination with an internal combustion engine, of a earburcter comprising a carbureting chamber, an exhaust member extending through said chamber, there-being a space entirely around said exhaust mem ber opento a dischar e for saidchamber, said carbureting chem er having'an air in- The means which I have in this embodiment employed, to. utilize thls discovery comprises a pipe or conduit 4L0,

thereby eliminate the hammer-;

let directed against the side of saidexhaust member opposite said discharge, said inlet being disposed so that the air passing thereto is heated by said exhaust member, said carbureting chamber being also provided with an auxiliary air inlet and'having a suction air actuatedinlet valve delivering at the rear of said primary air inlet on the inlet side'of said exhaust member, a fuel nozzle disposed to coact with said primary air inlet, and a connection from saidexhaust member to said carbureting chamber, whereby a portion of theexhaust gases are introduced to the exploslve mixture.

2. In a structure of the class described, the combination with an internal combustion engine, of a carburetor comprisinga carbureting chamber, an exhaust member extend mg throughsaid chamber, there being. a space entirely around said exhaust member open to a discharge for said chamber, said engine, of a carbureter comprising'a carbureting chamber, a heating member within said chamber connected to receive the exhaust gases, a primary air inlet passage and a fuel nozzle coacting therewith directed against the said heating member, and an auxiliary tion of the exhaust gases from said heating member to the carbureted mixture.

1 4. In a structure of the class described, the combination with an internal combustion engine provided with an exhaust member. of a carburetor chamber. said exhaust member being disposed'through said carbureting chamber so that the incomingair' and fuel is heated. thereby, and connections for said exhaust member to said carbureting chamber whereby a portion of the exhaust gases 1s the combination with :an internal combustion air inlet having a suction actuated valve de-'- 'livering on the inlet side of said heating ,member, and means for introducing a porintroduced to and mixed with the charge formed by said carburetor.

5. In a structure of the class described, ,the'combi'nation of a carburetingchamber, an exhaust pipe member extending-through said chamber, there being aspace entirely around said member open to a discharge at one side, a primary air inlet passage dclivering to said carbureting chamber comprising a venturl directed against the side of said exhaust member opposite said discharge, the inlet of said passage being disposed so that the air passing thereto is heated by said exhaust member, said carbureting chamber being also provided With an auxiliary air inlet and having a suction actuated inlet valve delivering at the rear of said venturi on the inlet sideof said exhaust pipe member, a fuel reservoir, and a fuel nozzle disposed in coacting relation with said venturi.

6. In a structure of the class described, the combination of a carbureting chamber, an exhaust pipe member extending through said chamber, there being a space entirely around said member open to a discharge at one side, a primary air inlet passage delivering to said carbureting chamber comprising a venturi directed against the side of said exhaust member opposite said discharge, the inlet of said passage being disposed so that the air passing thereto is heated by said exhaust member. a fuel reservoir, and a fuel nozzle disposed in coacting relation with said venturi. V

7. In a structure of the class described, the combination of a carbureting chamber, and exhaust pipe member extending through said chamber. there being a space entirely around said member open to a discharge at one side. an air inlet passage delivering to said carbureting chamber comprising a, venturi directed against the side of said exhaust member opposite said discharge,

said carbureting chamber bcing also providcd with an auxiliary air inlet and having a suction actuated inlet valve delivering at the rcarot saidvcnturi on the inlet side of said exhaust pipe member, a fuel reservoir, and a fuel nozzle disposed in coacting relation with said vcnturi. i

8. In a structure of the class described, the combination of a carbureting chamber,

an exhaust pipe member extending through said chamber, there bcmg a space entirely around said member open to a discharge at one sidc, an air inlctpassage delivering to said carburciing chamber comprising a vcniuri dircctcd against the side of said exhaust mcmbcr opposite said discharge, a fuel rcscrvoir, and a fuel nozzle disposed in coaciing rclation with said vcnturi.

5 in a. structure of the class described,v

the combination of a carburcting chamber,

an exhaust pipc mcmbcr cxtcnding vertically through said chamber. there being a space cnlircly around vsaid mcmber open to a discbarge at one side. an air inlet passage delivering to said carburcting chamber comprising a horizontally disposed venturi dircclcd against the side of said exhaust membcr opposite said discharge, a fuel reservoir,

and a fuernozzle disposed horizontally in coacting relation with said venturi.

10. In a structure of the class'described, the combination of a carbureting chamber, a heating member extending within said chamber, there being a space around said member open to a discharge at one side, said carbureting chamber having a primary air inlet passage deliver 9; against the said heating member oppo inlet of said passage the air passing the r is heated by said heating member, said cribureting chamber being also provided with. an auxiliary air inlet and having a. suction actuated inlet valve. a fuel reservoir, and afuel nozzle delivering with said primary air inlet against the said heating member.

11. In a structure of the class described; the combination of a carbureting chamber, a heating member extending within said chamber, there beinga space around said member open to a discharge at one side, said carbureting chamber having a primary air inlet passage delivering against the said heating member opposite said discharge, said carbureting chamber being also provided with an auxiliary air inlet and having a suction actuated inlet valve, a fuel reservoir. and a fuel nozzle delivering with said primary air against the said heating member.

12. In a structure of the class described, the combination of a carbureting chamber, a heating member extending Within said chamber. there being a space around said member opcn to a discharge at one side, said carburcting chambcrhaving a primary air inlet. passage dclivering'against the said heating member opposite said discharge, the inlet of said passage being disposed so that the air passing thereto is heated by said heating member. a fuel reservoir. and a fuel nozzle delivering with said primary air against the said heating member.

13. In a structure of the class described, the combination of a carbureting chamber, a beating member Within said chamber, a. primary air inlet passage and a fuel nozzle coacting therewith directed against the said heating member, and an auxiliary air inlet having a suction actuated valve delivering on the inlet side of said heating member.

In witness whereof, I have hereunto set my hand and seal in the presence of two witncsscs.

disposed so that HENRY MANTHEY.

Witnesses i E. W. GoonNow, L. E. Bruins.

said discharge, the 

